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Presentation
Characterization of Gas Atomized Cu48Ti34Zr10Ni8 Amorphous Alloy
Ames Laboratory Conference Papers, Posters, and Presentations
  • J. C. Foley, Iowa State University
  • D. J. Sordelet, Iowa State University
  • Thomas A. Lograsso, Iowa State University
Document Type
Conference Proceeding
Disciplines
Conference
MRS Fall Meeting & Exhibit
Publication Date
1-1-1998
DOI
10.1557/PROC-554-199
Geolocation
(42.3584308, -71.0597732)
Abstract

The advent of multi-component metallic alloys, which exhibit relatively good glass forming ability, has opened opportunities for processing metallic glasses into thick cross section components. The relatively good glass forming ability is important because conventional processing techniques (e.g., casting, extrusion and rolling) may be used to fabricate useful shapes while retaining the excellent engineering properties of an amorphous structure. In particular, the favorable processing characteristics of bulk amorphous alloys are the low cooling rates which can be exercised to yield an amorphous structure and the operating temperature range between the glass transition temperature (Tg) and the crystallization temperature (Tx). Current work is focused on developing a processing strategy that will allow us to fabricate even larger cross section amorphous alloys than are currently achievable by casting methods. The technique involves producing high pressure gas atomized (HPGA) Cu48Ti34Zr10Ni8powders and consolidating them at temperatures above Tg, but below Tx. Thermal analysis of atomized powders by DSC provides details of the influence of powder particle size, which is related to cooling rate during atomization. The results of experiments characterizing the thermal and kinetic behavior of Cu48Ti34Zr10Ni8powders indicate that short processing times are required to retain the amorphous structure during consolidation in the temperature regime between Tg and Tx.

Comments

This article is from MRS Proceedings 554 (1998): 199, doi:10.1557/PROC-554-199.

Copyright Owner
Materials Research Society
Language
en
Citation Information
J. C. Foley, D. J. Sordelet and Thomas A. Lograsso. "Characterization of Gas Atomized Cu48Ti34Zr10Ni8 Amorphous Alloy" Boston, MA(1998)
Available at: http://works.bepress.com/thomas_lograsso/163/